Did you find the height of the 860's comparable to the 880s? The Quigley vans, especially of my era, are known for poor up travel. Putting the 880s coils on dramatically increased the travel but is just to firm for my liking. My van only weighs 7000#. I am looking for a coil that may give a little more lift but give a nice juicy ride that sucks up the forest roads and desert washboard.